i hardly ever dare brag about myself, but here i must say this (multi-touch) tecnnilogy is so .. 2004 :)
ok, joking, but for inspiration some of you might want to check-out two projects i worked on with a friend, back in .. 2004. they're based on a huge multitouch screen we developed using infrared light and motion-tracking in, mind you, director. the credits for the great concepts all go to Joes (usemedia), i developed the user-initeraction system. http://usemedia.com/?find=Touch+me http://usemedia.com/?find=USETEXT,+please+touch .arri On 2/15/08, Jacopo Mangiavacchi <[EMAIL PROTECTED]> wrote: > Ciao Alessandro, > > Thanks, I've seen how easy it is to extend the tool with custom patch > programming but I'd like to better understand the real focus and > potential of this gorgeous tool. > > I know that some of the work is done at the CPU level, let me say most > in my sample composition. This is the reason because I'm not sure > that I correctly use this tool. Of course this doesn't mean that > coding in Quartz2D or OpenGL automagically move all the workload to > the GPU but I think that implementing the application flow in code, > instead of a composition, can give me lot more control about > performance. > > For example, as you have seen in the sample, I use the standard > Iterator patch to draw the photos but if I need to redraw just one > sprite, for example because I select it and I want to change his > border color, it seems to me that I need to execute the entire > Iteration and redraw all the sprites. > > Of course my composition is very basic but what about something more > tricky. I wonder for example if QC is the right tool to write games > where you know, performance are so important. > > Probably the problem is my background and I have the tendency to > confuse the compositon pattern with the workflow pattern. > > Actually I'm not realy think about games in QC. I'm working let me > say on some content protection and video mixer solution and QC could > give me an immense help to build some usability scenario and of course > could strongly reduce the development cost. > > Again, thank you so much for any suggestion, > jacopo mangiavacchi > > > > > On Feb 15, 2008, at 11:21 AM, Alessandro Sabatelli wrote: > > > Some work is done on the GPU and some on the CPU. It very much > > depends on the work involved. As an example, Core Image patches are > > compiled on the CPU and the execution is attempted on the GPU. It is > > possible that the host will not be able to execute on the GPU, in > > which case the work will be done on the CPU. > > > > Note that you can render whatever you'd like on the CPU. Take a look > > at the Histogram Operation developer example and the documentation > > which covers patch writing. > > .xX > > > > On Feb 14, 2008, at 4:22 PM, Karan Lyons <[EMAIL PROTECTED]> > > wrote: > > > >> First of all, this is incredibly awesome, especially considering > >> it's one of your first compositions. > >> Quartz Composer is pretty good for handling visual stuff, but it > >> is my understanding that all work is done by the GPU, which > >> severely limits the work you can do directly in Quartz Composer. > >> I've done some simple things with Cocoa and QC, and I think that's > >> your best bet for something that looks great whilst running quickly. > >> If you're looking for some tutorials or other Quartz Compositions > >> that you can look at, there are of course the Developer Examples > >> at /Developer/Examples/Quartz Composer/. Some websites that you can > >> also check out are http://quartzcompositions.com and Sam Kass' blog > >> at http://www.samkass.com/blog/ > >> Good luck! > >> > >> Namaste, > >> Karan > >> > >> Karan "The Architect" Lyons: Web Design & Development at Geek > >> Ramblings | Student | Omnigeek > >> contact | email: [EMAIL PROTECTED]| cell: 857-544-9527 | > >> skype: taoofkaran | aim: taoofkaran > >> > >> > >> > >> On Feb 14, 2008, at 3:48 PM, Jacopo Mangiavacchi wrote: > >> > >>> <Surface.qtz> > >>> > >>> Hi, > >>> I'm a newbie in QC with background on microsoft tech like > >>> silverlight/wpf and xdk. Charmed by the Surface photo browsing > >>> demo and as a real mac lover I tried to implement a prototype of > >>> it on QC. > >>> > >>> I looked at some other implementations of it, from iPhone to > >>> several RIA demos (SVG, silverlight etc.), but I figure out that > >>> Apple multi touch approach is far more than let the user put their > >>> fingers on the screen, especially big screen. I believe that big > >>> screen multi touch is very fun and there are lot of stuff you can > >>> do in QC using tools like the Wiimote but I think that asking the > >>> user to always hold on their arms is not the real solution for me. > >>> > >>> For operation like zoom and rotate I've planned to use the new > >>> MacBookAir trackpad gesture for pinch, swipe and rotate but in the > >>> view of the fact that first I don't have a MacBookAir and second > >>> gesture SDK doesn't seems to be available at the moment I simulate > >>> the pich effect with the scroll up/down gesture and the rotation > >>> with the scroll left/right gesture of a MacBook regular trackpad. > >>> An interesting side effect of this roundtrip by the way is that it > >>> works even with a mighty mouse, that in some way it also implement > >>> a sort of multi touch experience. > >>> > >>> Well the composition in attach is just a prototype and doesn't > > >>> implement all the features of the original demo but there are some > >>> consideration about the development of it that I'd like to share > >>> with you. > > >>> > >>> As I just said I'm not a expert at all here and this was really my > >>> first experience with this tool but I found extreme advantages > > >>> from Quartz Composer. I found it a very high level tool, easier > > >>> to use then any other traditional development environment and I > > >>> believe it implements a real visual approach on graphic > > >>> programming. I really appreciate how it's so easy to reuse > >>> graphic components. Actually I focused only on the script that > >>> handle user input and move photos, all the graphics effects have > > >>> been just copied from the samples in the SDK. > > >>> > >>> It's amazing how it is so easy and transparent to add complex > > >>> animation and graphic filtering. I found outstanding how few lines > > >>> of code I had to write to build such a user interface prototype. > >>> > >>> I really believe that QC has lot of potential but as a newbie I've > >>> found no book and few stuff on the SDK and on the web helping me > >>> to understand the potential and the right usage of this tool. > >>> > >>> I'm investigating the easy integration with Cocoa Bindings, > > >>> DashCode, QuickTime and even Safari but my question is if QC is > >>> the right tool to build an application like this one or if it > >>> better to directly code in Cocoa and Quartz2D/OpenGL ? Please > >>> review the prototype and let me know. > > >>> > >>> > >>> Thanks in advance, > >>> jacopo mangiavacchi > >>> > >>> _______________________________________________ > >>> Do not post admin requests to the list. They will be ignored. > >>> Quartzcomposer-dev mailing list ([email protected] > >>> ) > >>> Help/Unsubscribe/Update your Subscription: > >>> > http://lists.apple.com/mailman/options/quartzcomposer-dev/karan%40geekramblings.com > >>> > >>> This email sent to [EMAIL PROTECTED] > >> > >> _______________________________________________ > >> Do not post admin requests to the list. They will be ignored. > >> Quartzcomposer-dev mailing list ([email protected] > >> ) > >> Help/Unsubscribe/Update your Subscription: > >> > http://lists.apple.com/mailman/options/quartzcomposer-dev/asabatelli%40apple.com > >> > >> This email sent to [EMAIL PROTECTED] > > _______________________________________________ > Do not post admin requests to the list. 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